Help!!! 5 weeks into flower and my leaves have turned yellow

[Noobiegrow]

Im about 5 weeks into flower and my leaves have turned yellow been feeding gh maxibloom and calmag with dechlorinated tap water. PH to 6.1-6.4. Cant seem to figure out the problem. My media is Fox Farm ocean Forest I've been watering when dry

 

[Kampbe1l]

is it just a few lower leaves, or is there damage showing on newer top growth?

 

[Noobiegrow]

is it just a few lower leaves, or is there damage showing on newer top growth?

Just the lower leaves have damage right now but both plants have turned a lime green color

 

[Kampbe1l]

It is normal For MJ leaves to start turning yellow as harvest time approaches... see how it develops.

 

[Noobiegrow]

It is normal For MJ leaves to start turning yellow as harvest time approaches... see how it develops.

Even with adding nutes?

 

[Kampbe1l]

it's not light burn, so my first person of interest, rather than suspect, is pH level - if it is an issue.

are some of the leaves curled downwards, and some burnt tips?

Even with adding nutes?

yes.. plants suck up all its nutrients/energy, and yellowing of leaves from bottom to top is typical of flowering growth, towards harvest.

 

[Noobiegrow]

it's not light burn, so my first person of interest, rather than suspect, is pH level - if it is an issue.



yes.. plants suck up all its nutrients/energy, and yellowing of leaves from bottom to top is typical of flowering growth, towards harvest.

Awesome to hear lol its my first grow so don't really know what to expect

 

[Bitters420]

Do you water until at least 20% run-off?

 

[Milson]

it's not light burn, so my first person of interest, rather than suspect, is pH level - if it is an issue.

are some of the leaves curled downwards, and some burnt tips?



yes.. plants suck up all its nutrients/energy, and yellowing of leaves from bottom to top is typical of flowering growth, towards harvest.

What would curled down leaf tips and some burnt tips suggest?

 

[Beachwalker]

So you need to tell us what your runoff is, what your medium is, what you're feeding, what PPM you're feeding, what NPK ratio Etc. The more info you can offer the better we can help you

 

[Noobiegrow]

Do you water until at least 20% run-off?

Yes i always make sure theres at least 20% runoff

 

[Noobiegrow]

So you need to tell us what your runoff is, what your medium is, what you're feeding, what PPM you're feeding, what NPK ratio Etc. The more info you can offer the better we can help you

Im using gh maxibloom which is 5-15-14,medium is ffof am feeding around 800 ppm. Not sure what the runoff is at

 

[Noobiegrow]

Awesome to hear lol its my first grow so don't really know what to expect

It could be the ph level of the soil. Im watering at 6.2 mainly. Just bought a ph reader and calibrated it a couple days ago

 

[Aqua Man]

In something like Fox farm you only want to water until you see some runoff but you don't want something like 10-20% just enough to know the pot is completely watered. These are organics nutrients and if you water to runoff you are washing the nutrients out of the soil. Which is what we do when using inorganic salt fertilizers and why we do it. Organic nutrients need to be treated differently or you end up washing out your nutrients sooner than otherwise.

To me it looks like the nutrients are depleted and you need to start feeding. The burnt tips can be from excess calcium or the beginning of a potassium deficiency.

Now that the nutrients are depleted and your using inorganic you will want to water to runoff. The maxibloom and cal mag create a ratio very low in nitrogen. I suggest a feed with 50/50 maxibloom/maxigrow. For the next couple feeds then 75/25 bloom/grow.

You have a nitrogen deficiency

 

[Noobiegrow]

I was thinking either deficiency or potassium deficiency

Yes i always make sure theres at least 20% runoff

I was thinking either a manganese or potassium deficiency

 

[Noobiegrow]

In something like Fox farm you only want to water until you see some runoff but you don't want something like 10-20% just enough to know the pot is completely watered. These are organics nutrients and if you water to runoff you are washing the nutrients out of the soil. Which is what we do when using inorganic salt fertilizers and why we do it. Organic nutrients need to be treated differently or you end up washing out your nutrients sooner than otherwise.

To me it looks like the nutrients are depleted and you need to start feeding. The burnt tips can be from excess calcium or the beginning of a potassium deficiency.

Now that the nutrients are depleted and your using inorganic you will want to water to runoff. The maxibloom and cal mag create a ratio very low in nitrogen. I suggest a feed with 50/50 maxibloom/maxigrow. For the next couple feeds then 75/25 bloom/grow.

You have a nitrogen deficiency

Thats what i was just thinking was a nitrogen deficiency with a potassium and or manganese deficiency